code: def _get_full_cpu_image_uri(toolkit, toolkit_version, framework):
      return IMAGE_URI_FORMAT_STRING.format(
          REGION, IMAGE_URI, framework, toolkit, toolkit_version, "cpu"
      )
  
imports: from __future__ import absolute_import
  import json
  import logging
  import os
  import pytest
  from mock import MagicMock, Mock, patch
  from sagemaker.mxnet import MXNetModel, MXNetPredictor
  from sagemaker.rl import RLEstimator, RLFramework, RLToolkit, TOOLKIT_FRAMEWORK_VERSION_MAP
  from sagemaker.session_settings import SessionSettings
  from sagemaker.tensorflow import TensorFlowModel, TensorFlowPredictor
label_desc: Use image node_id 2 for calling a global function with example usage: _get_full_cpu_image_uri(toolkit, toolkit_version, framework) and returns: IMAGE_URI_FORMAT_STRING